poem=["灯鹳雀楼",
      "王之涣",
      "白日依山尽",
      "黄河入海流",
      "欲穷千里目",
      "更上一层楼"]
print(poem)

for poem_str in poem:
    print(poem_str.center(20))  # 文本中心对齐，靠左边20
